The Siberian is a domestic cat

Cat

The cat , also known as the domestic cat or housecat to distinguish it from other felids and felines, is a small, usually furry, domesticated, carnivorous mammal that is valued by humans for its companionship and for its ability to hunt vermin and household pests...

 breed that has been present in Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

 for centuries. The full name of the cat is the 'Siberian Forest Cat' although sometimes referred to as the 'Siberian' or the 'Siberian Cat'. The cat is an ancient breed that is now believed to be ancestral to all modern long-haired cats. The cat has similarities with the Norwegian Forest Cat

Norwegian Forest Cat

The Norwegian Forest Cat is a breed of domestic cat native to Northern Europe, and adapted to a very cold climate, with top coat of glossy, long, water-shedding hairs, and a woolly undercoat for insulation...

, to which it is likely closely related. It is a natural breed and the national cat of Siberia.

There are claims that it is hypoallergenic

Hypoallergenic

Hypoallergenic, meaning "below normal" or "slightly" allergenic, was a term first used in a cosmetics campaign in 1953. It is used to describe items that cause or are claimed to cause fewer allergic reactions...

 and produces less Fel d1 than other cat breeds.
The cat was first mentioned in a book by Harrison Wier, which included information of the earliest cat shows in England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 in 1871.